Updated Vietnamese translation
Updated Vietnamese translation

Signed-off-by: Trần Ngọc Quân <d2635f9f6be81b9042e1c1be60d20ebe0e16c7e2@gmail.com>

felipeborges/gnome-online-accounts,felipeborges/gnome-online-accounts,halfline/gnome-online-accounts,felipeborges/gnome-online-accounts,Distrotech/gnome-online-accounts,ritzk/gnome-online-accounts,Distrotech/gnome-online-accounts,halfline/gnome-online-accounts,ritzk/gnome-online-accounts,halfline/gnome-online-accounts,ritzk/gnome-online-accounts,Distrotech/gnome-online-accounts